Stereochemical factors and receptor interactions associated with narcotic analgesics.
D002626:Chemistry, Pharmaceutical; D011431:Dextropropoxyphene / Q000494:pharmacology; D006801:Humans; D008691:Methadone / Q000494:pharmacology*; D009020:Morphine / Q000494:pharmacology*; D011984:Sensory Receptor Cells / Q000187:drug effects*
D009020:Morphine; D011431:Dextropropoxyphene; D008691:Methadone